L'asso - Funky staff which serves great strict "Italian-style" pizzas. Right across the street from the famous Lombardi's, but IMO, L'asso is better, and you aren't treated like cattle. 192 Mott St at Kenmare St in NoHo

Maoz Vegetarian - Falafel chain - a bit pricey, but they have a great salad bar to dress up your falafel with. The broccoli is addicting! Many locations - I go to the one by Union Square because it's near work (38 Union Sq E between 16th & 17th St).

Andaz - Great Indian food on the Upper East Side. A semi-fancy place, usually close to empty. The best entree I've had there was the Lamb Saag (lamb and sauteed spinach) with garlic naan and basmatti rice. 1378 1st Ave between 73rd & 74th St.

Big Nick's - One of the best burgers in town, hole in the wall diner, cheap and just plain awesome (this is real New York). 2175 Broadway At 77th St

Cafe Gitane - Trendy little French cafe (always crowded) that serves up great sandwiches. Since you'll have time to kill, check out the old St. Patrick's Cathedral across the street or the shops in the area. Or if you're a dude, just check out all the hot ass walking around . 242 Mott St between Prince & Houston St

Famous Ray's - My favorite slice of plain cheese pizza to go. Really cheesy, sweet tomato sauce, and I always load it up with crushed red pepper and parmesan. Flavor increases exponentially if you're drunk. Located at 6th ave on the corner of 11th street (this is the best location to go to, IMO).

Cafe Henri - Little french place, great for brunch! I've only gone to the location in Long Island City Queens, but there's also one in the West Village. Can get crowded so plan ahead. Long Island City 1010 50th Ave (Queens; 7 train); 27 Bedford St at Downing St (Manhattan).

Rocko's - A place for desserts and cappuccino. This place has been around forever, and some will call it touristy, but there cappuccino is great so I don't care. Definitely recommend walking up and down Bleeker Street, they have a better Italian-deli selection than Little Italy. 243 Bleecker St b/t Carmine and Cornelia streets.

Crif Dogs - Cool little shop on St. Marks in the East Village that sells custom-made hot dogs to your liking. The key here is bacon! Kinda expensive, (I think it's around $5 for a hot dog), but it's fun to go to once in a while, especially just to walk up and down St. Marks area and check out the shops. Located on St. Marks Place (8th Street), between 1st ave and Ave A by Tompkins Square Park.

Paul's - Pretty good burger spot in the East Village. They make burgers non-stop so the meat is fresh (you can see it in a huge pile on their grill. Can be a bit messy, but it's cool 'cause you can order it exactly how you want it cooked and they don't care. Right next door to Gem Spa bodega, which is famous for its egg creams. Located 2nd ave between 7th and St. Marks Pl (8th street).

Corner Bistro - Cozy burger joint that also sells cheap beer from McSorley's Pub in the East Village (it's like $3 for a pint). Located in West Village at the cross-section of West 4th street, Jane Street, and 8th Avenue.

Never really ventured to this forum and this thread is relevant to my interests.

London:Fuzzy's Grub
Chain of sandwich bars in these locations across the capital. I can only speak for the Pall Mall location personally. Their main focus is traditional English roast dinners, they sell you roast dinner in a takeaway tub for £6 but the main attraction is their sandwiches. Basically a roast dinner with a piece of bread slapped on either side, they're ridiculously monstrous.
My usual order is white bread, layer of stuffing, roast potatoes, Yorkshire pudding pieces, a smattering of mash potatoes, roast beef cuts, then a coating of gravy with horseradish sauce spread on the top slice of bread. Some might argue £5 is a lot for a sandwich but I can put away a lot of food and they always leave me stuffed.Sergio's
Not sure if this place still goes by Sergio's since it moved location but it's located here just round the corner from Picadilly Circus, which being our equivalent of Times Square you will probably visit if you're here as a tourist.
The food is just superb, traditional handcooked recipes they've been preparing fresh everyday for decades, the service is impeccable, the two older gentlemen who usually work the counters are extremely friendly, I remember having a conversation with one of them about films for a good 15 minutes brought on by the various film posters he's hung on the walls and this was the first time I stepped foot in the place.
I pretty much go here every day and there's just so much to recommend.
Their lasagne is exquisite as is their traditional English curry, their chicken and chorizo sausage pasta, their paiella (only served on Fridays), beef cannelloni etc.
They also have a wide variety of sandwich fillings also avaliable in baps, they fill them out quite generously too with the parma ham, tomato and mozzarella toasted sandwich on brown bread being my firm favourite. All affordable, filling and satisfying. Real hidden gem.

MiamiSmith and Wollenski's
Superb steak house that also serves great seafood, real quality steaks, delicious. (Also been to the one in NYC which served steaks just as nice but I'm not sure about the seafood)Big Pink Diner
Great sloppy messy food to fill your stomach. My usual order is Philly Cheese Steak with hand made potato chips (i.e. crisps). Just awesome. Great burgers too.

SpainLa Haciendas
One of the finest restaurants I've had the pleasure of eating at. Situated in a converted Roman style villa in the scenic hills of Mijas the atmosphere is superb especially in the likely event that's it's hot enough to dine in the garden. The food is simply divine, everything is beyond delicious with impeccable presentation. It's a bit pricey but it takes one bite of your dish to justify that price. I know us Brits love to infest the Costa Del Sol so if any of my fellow Limey's ever find themselves there then I highly recommend you check it out. There's a map here and here's their summer '10 menu in case you fancy a gander.El Rancho
Located here in the Costa Del Sol this place touches on the quality of La Haciendas but at a more reasonable price. Everything's pretty damn tasty but the dish that keeps me going back is easily meat on the stone. They give you a red hot slab of stone suspended over paraffin lighters and a bowl of beef cuts with a cup of rock salt to cook your own meat. Cooking the meat on a heated slab has a real rustic charm to it and is a pretty unique and hands on dining experience.Valparaiso
Located here in Mijas the restaurant itself is large and very charming with great scenery and a lively atmosphere. Normally one can expect great entertainment near the stage area as well. Its greatness is clearly recognised by the many pictures of celebrities on the walls from some of their national treasures to the Beckham's. Great food, great charisma, great night out.

Quarry House Tavern: This hole in the wall is actually a hole in the floor. It has it's own entrence, but it's in the basement of an Indian restaurant. The beer menu is about 20 pages long, with out 15 of those pages focusing on Belgians. Insanely good burgers, home-made tater tots topped with white cheddar, homemade potato chips with dill dip. It's my favorite bar in the area, except Saturdays are ruined with too-loud live rockabilly.

8407 Kitchen Bar: It's a stupid name, but the food is stellar. Non-pretentious, but the chef is adventurous. Menu changes every few weeks and is always seasonal. Portions are small. A recent meal I had there: Pumpkin-Apple soup, Seared Scallops with a Chantrelle & Sweet Potato Hash topped with a Truffle Dressing, and a Goat-Cheese Flan for dessert. Yeah, you want to go there. Sunday Brunch is pretty good, too.

Ray's The Classics: Steak, Chops, Shrimp, Scallops, and sides. That's all this place does, and it does them all insanely well. One of the best steaks I've had.

Adega Wine Bar: The name is a misnomer. This is a wine store sandwich shop. You pay normal wine-store prices for a bottle of wine, but you can drink it there with the meal. They have a neat turbo-chiller for the whites. Small but thoughtful selection of wine. The sandwiches are STELLAR. One of my faves is the Duke Ellington: Roast beef, brie, romaine, tomato, and a horseradish cream on crusty baguette. Or the chicken flatbread with pesto and a crazy-good tarragon sauce. Also, don't miss their sweet potato fries and eggplant fries.

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You see the glass as half empty. I see it as the perfect level for blowing milk bubbles!

Amura sushi on Sand Lake is great too. Right next to it is a Season's 52, very nice kind of standard restaurant, steaks and fish, pastas and sandwiches, great flatbreads. I don't know how many other locations they have, they're owned by Darden.